一.pom.xml【重点】
1.代码块
<properties>
<spring.version>5.1.6.RELEASE</spring.version>
</properties>
<dependencies>
<!-- mybatis-plus插件依赖 -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus</artifactId>
<version>3.1.1</version>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.11</version>
</dependency>
<!--简化bean代码的工具包-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
<version>1.18.4</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
2.图解
二.数据库配置文件jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/db2
jdbc.username=root
jdbc.password=root
三.applicationContext.xml【重点】
1.代码块
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 扫描包路径 -->
<context:property-placeholder location="classpath*:jdbc.properties" />
<!-- 定义数据源 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
destroy-method="close">
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="maxActive" value="10"/>
<property name="minIdle" value="5"/>
</bean>
<!--这里使用MP提供的sqlSessionFactory，完成了Spring与MP的整合-->
<bean id="sqlSessionFactory"
class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--扫描mapper接口，使用的依然是Mybatis原生的扫描器-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="mapper"/>
</bean>
</beans>
2.范例
四.日志文件
log4j.rootLogger=DEBUG,A1
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=[%t] [%c]-[%p] %m%n
五.映射配置文件
1.代码块
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="mapper.UserMapper">
<select id="findAll" resultType="pojo.User">
select * from tb_user
</select>
</mapper>
2.范例
六.实体类【重点】
1.代码块
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor //空参构造方法
@AllArgsConstructor //全参构造方法
@TableName("tb_user")
public class User {
private Long id;
private String userName;
private String password;
private String name;
private Integer age;
private String email;
}
2.范例
七.dao层【重点】
1.代码块
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Repository;
import pojo.User;
import java.util.List;
/**
* mybatisPlus整合spring
*/
public interface UserMapper extends BaseMapper<User> {
public List<User> findAll();
}
2.范例
八.测试类
1.代码块
import mapper.UserMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Configuration;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.web.context.support.XmlWebApplicationContext;
import pojo.User;
import java.util.List;
/**
* 测试spring整合mybatisPlus
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext.xml")
public class SpringTest {
@Autowired
private UserMapper userMapper;
@Test
public void test01(){
List<User> users = userMapper.selectList(null);
for (User user:users) {
System.out.println(user);
}
}
2.范例
九.源码
mybatis-plus.rar
